Learn how to read comfortably, listen with offline AI voices, repair metadata and covers, organize a personal library, and move DRM-free EPUB files between Apple Books, Kindle, and other compatible readers.
Build a comfortable iPhone or iPad reading experience with reflowable text, themes, fonts, spacing, and local books.
Explore Reader →Use downloadable local AI voices to read a DRM-free EPUB aloud after the one-time model setup.
Explore Read Aloud →Correct metadata, covers, series order, HTML, CSS, and common formatting issues directly on iPhone or iPad.
Explore Editor →Understand Apple Books, Kindle delivery, Calibre metadata, open standards, privacy, and file compatibility.
Browse Ecosystem →Reader apps, typography, themes, comfort, and choosing the right iPhone reading experience.
Eliminate invisible black-on-black text, forced publisher fonts, and broken margins with one-tap CSS hygiene directly on iOS.
The science of optical ergonomics, blue light spectrums, and ambient contrast: why modern OLED panels with true black and warm paper themes rival dedicated e-readers.
From x-height and stroke contrast to serif vs. sans-serif: why fonts like Bookerly, Newsreader, and Atkinson Hyperlegible change the way your brain reads.
Choose an iPhone EPUB reader by ownership, typography, offline access, read-aloud quality, organization, and the ability to repair imperfect books.
EPUB read aloud, offline text to speech, local AI voices, accessibility, and hands-free reading.
How modern local-first readers enjoy natural, emotionally expressive audiobook narration with zero cellular data, zero battery drain, and zero $139/year fees.
Experience natural, distraction-free dual-sensory immersion with on-device Kokoro-82M voices and specialized typography—with zero $139/year subscription traps.
Organize million-word serials, fix missing covers, and listen hands-free during commutes with zero cellular data.
The traveler's guide to sovereign, uninterrupted audiobook narration on airplanes, wilderness trails, and ocean voyages.
Inside the fMRI brain scan research: why listening and visual reading activate identical semantic neural networks—and how bimodal immersion bridges both worlds.
Reclaim 2 hours of daily screen time from algorithmic feeds by turning mundane downtime into effortless, hands-free neural audiobook progress.
Import a DRM-free EPUB, download a compatible voice once, and move between visual reading and hands-free listening without uploading the book.
A local voice model can narrate a text-based EPUB directly on an iPhone after the one-time model download.
Metadata, covers, series order, formatting repair, diagnostics, and mobile EPUB workflows.
Fix EPUB metadata, broken formatting, series numbering, CSS, and blurry covers on iPhone or iPad—no laptop or desktop software needed.
How to fix series ordering, repair corrupted OPF packages, and organize multi-book sagas on iPhone & iPad.
Fix blurry 200px thumbnails, missing jacket art, and generic grey rectangles in your digital library in under 10 seconds.
The step-by-step diagnostic guide to repairing corrupted UTF-8 encodings, obsolete NCX tags, and broken OPF manifests that make Amazon reject your books.
Cure your digital Tsundoku: a 3-step masterclass to standardize book titles, inject high-res covers, and build a museum-grade personal book collection in your pocket.
A missing or blank cover usually comes from the EPUB package—not the Apple Books shelf. Check the embedded image, manifest, metadata, and exported copy.
Correct the information stored inside an EPUB—not only its filename—then export a cleaner book to your preferred reading app.
Understand when to convert, which direction preserves quality, and how to read or repair the result on your iPhone—without installing desktop software.
Replace missing, blurry, or wrong book covers inside the EPUB file itself—so the fix travels with the book to every reader app, every device, every time.
A systematic troubleshooting guide for EPUBs that crash, display blank pages, show garbled text, or refuse to open in Apple Books, Kindle, Kobo, and other readers.
Why Calibre's greatest limitation is that it's desktop-only — and how Epub Tidy solves every core use case on iPhone or iPad, no PC required.
Apple Books, Kindle, Calibre, privacy, public-domain libraries, and format compatibility.
In an era of remote book deletions, DRM revokations, and surveillance reading apps, why sovereign local-first e-readers are the only guarantee of your library.
How fixed-layout document formats cause eye strain, endless zooming, and accessibility nightmares—and why reflowable EPUB is the only modern standard for smartphones.
How digital volunteers rescued literary classics from ugly Gutenberg scans, and how to enjoy world-class typography and offline AI audio for $0.
Proprietary walled gardens vs native iOS elegance vs true local-first digital ownership: which digital reading ecosystem truly respects the bibliophile?
Kindle devices do not open EPUB files directly, but Amazon accepts DRM-free EPUBs through Send to Kindle and converts them for your library.
How EpubTidy contrasts against cloud TTS apps and desktop library software.
| Capability / Metric | EpubTidy (On-Device) | Speechify ($139+/yr) | Calibre Desktop |
|---|---|---|---|
| Annual Subscription | $0 (Free Core) | $139 - $249 / year | $0 (Open Source) |
| Offline AI Voice Narration | 100% Offline (Apple Neural Engine) | Requires Cloud (Fails offline) | Robotic OS TTS only |
| Edit on Mobile (No Laptop) | Yes (iPhone & iPad Native) | No editing capability | Laptop/Desktop required |
| Zero Telemetry & Privacy | 100% Local Sandbox | Text uploaded to cloud | Local Desktop Storage |
| Cover & CSS Hygiene Repair | 1-Tap Apple Books Match | Not Available | Complex Manual Plugins |
On-device synthesis requires zero internet connectivity, meaning it will never buffer or stop playing when you enter subways, board flights, or hike off-grid. Furthermore, it uses zero cellular data, causes significantly less battery drain than streaming high-bitrate audio over 5G, and protects your privacy by ensuring your book text is never transmitted to third-party cloud servers.
Yes. EpubTidy includes an automated Apple Books cover lookup. With a single tap, it queries official high-resolution catalog covers based on your book’s title and author, injecting razor-sharp artwork directly into the EPUB container. You can also crop and select custom images from your iOS Photos.
You retain complete freedom. EpubTidy modifies standard W3C EPUB files. Once you repair an ebook, you can tap Share to open it in Apple Books, send it to a Kindle, AirDrop it to your Mac, or copy it to any hardware e-reader (like Kobo or Boox). There is zero proprietary lock-in.
EPUB is an open ebook format built from HTML, CSS, images, metadata, and navigation files inside one package. Reflowable EPUB books adapt their text to phones, tablets, and e-readers instead of locking content to a fixed page like a PDF. Read the EPUB vs PDF guide for a practical comparison.
Download EpubTidy on the Apple App Store for iPhone & iPad. Enjoy 100% offline neural voices, instant pocket EPUB editing, and true book privacy.
